https://download.zhoufengjie.cn/document/os/linuxos/www.zhoufengjie.cn-RHCA280-openshift-el7.txt
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1.Install and configure Docker Install and configure Docker on your master and node systems according to the following conditions: Docker uses the pre-existing volume group docker-vg as a backing volume. Docker points to the private registry at workstation.lab.example.com:5000 Docker must NOT use public registries docker.io and registry.access.redhat.com Docker uses the certificate available from workstation.lab.example.com's dir of :/etc/pki/tls/certs/example.com.crt Add the certificate as trusted In order to test if your docker configurationg is correct you may try to run:docker pull openshift/hello-openshift ########################################################################## ###on master do that ssh-keygen -f .ssh/id_rsa -N '' ssh-copy-id root@master ssh-copy-id root@node ###on master and node do follow yum update -y systemctl start NetworkManager ; systemctl enable NetworkManager systemctl stop firewalld ; systemctl disable firewalld yum install docker -y systemctl start docker ; systemctl enable docker #docker info ; pvs ; vgs cat >> /etc/sysconfig/docker-storage-setup <<EOF #when train,there no vg,so use the DEVS DEVS=/dev/vdb VG=docker-vg SETUP_LVM_THIN_POOL=yes EOF systemctl stop docker rm -rf /var/lib/docker/* docker-storage-setup #docker info vim /etc/sysconfig/docker ADD_REGISTRY='--add-registry workstation.lab.example.com:500' BLOCK_REGISTRY='--block-registry docker.io --block-registry registry.access.redhat.com' systemctl restart docker yum install ca-certificates update-ca-trust enable scp root@workstation.lab.example.com:/etc/pki/tls/certs/example.com.crt /etc/pki/ca-trust/source/anchors/ update-ca-trust extract #on master #docker-registry-cli workstation.lab.example.com:5000 search openshift3 ssl #docker pull openshift/hello-openshift docker-registry-cli workstation.lab.example.com:5000 search openshift ssl | awk '$2~"Name" || $1~"Tag"{print $NF}'|xargs -n 2|sed 's/ /:/g' > /root/images cat /root/images|while read image ;do docker pull $image;done scp /root/images root@node:/root/images #on node cat /root/images|while read image ;do docker pull $image;done ########################################################################## 2.Install OpenShift Enterprise Install OpenShift Enterprise(OpenShift Container Platform) on master using the official installer and configure systems as follows: ######################## System Role master.lab.example.com MASTER node.lab.example.com NODE ######################## The installation will be RPM based. The applications subdomain is set to cloudapps.lab.example.com The installer uses the root user for ssh access Note:(ssh keys have already been setup). ########################################################################## #on master and node yum -y install wget git net-tools bind-utils iptables-services bridge-utils atomic-openshift-docker-excluder atomic-openshift-excluder atomic-openshift-utils atomic-openshift-excluder unexclude cp /etc/sysconfig/docker{,.back} #on master atomic-openshift-installer install Are you ready to continue[y/n]: y User for ssh access[root]: root (1) Openshift Container Platform (2) Registry Choose a variant from above: [1]: Enter Enter hostname or IP address: master.lab.example.com Will this host be an openshift master?[y/N]: y Will this host be RPM or Container based? [rpm]: Enter Do you want to add additional hosts? [y/N]: y Enter hostname or IP address: node.lab.example.com Will this host be an openshift master？[y/N]: N Will this host be RPM or Container based? [rpm]: Enter Do you want to add additional hosts? [y/N]: N New default subdomain[]: cloudapps.lab.example.com //实际考试根据实际情况填写 >Specify your http proxy? Enter >Specify your https proxy? Enter Do the above facts look correct?[y/N]: y Are you ready to continue[y/n]: y systemctl status atomic-openshift-master.service #on master and node systemctl status atomic-openshift-node.service oc get nodes //检查 maste 和 node 节点状态是否正常 #on master and node cp /etc/sysconfig/docker{.back,} systemctl restart docker atomic-openshift-excluder exclude ########################################################################## 3.Configure OpenShift Enterprise Once the Master and the Node(s) have been installed,proceed to the configuration of your OpenShift instance by performing the following operations. Edit the default OpenShift Images Stream and replace every entry of registry.access.redhat.com with workstation.lab.example.com:5000 *Old Exam have: *Deploy a registry using the image openshift3/ose-${component}:${version} *Deploy a router using the image openshift3/ose-${component}:${version} *Use default naming for both the registry and the router. ########################################################################## ##on master #oc get pods oc edit dc registry-console #change line:image: registry.access.redhat.com/openshift3/registry-console:3.3 image: workstation.lab.example.com:5000/openshift3/registry-console:3.3 oc edit is -n openshift #chang all the registry.access.redhat.com =to=> workstation.lab.example.com:5000 %s/registry.access.redhat.com/workstation.lab.example.com:5000/g ########################################################################## 4.Configure OpenShift authentication Configure authentication on your OpenShift instance so that: The Identity Provider is set to HTPasswdPasswordIdentityProvider The user randy exists with password boaterch The user ryan exists with password boaterch Both users must be able to authenticate to the Openshift Instance via CLI and on the Web Console at https://master.lab.example.com:8443 No other user shell be able to login ########################################################################## ##on master yum install httpd-tools vim /etc/origin/master/master-config.yaml #apiVersion:v1 kind: HTPasswdPasswordIdentityProvider file: /etc/origin/openshift.passwd htpasswd -c /etc/origin/openshift.passwd randy htpasswd /etc/origin/openshift.passwd ryan systemctl restart atomic-openshift-master ########################################################################## 5.Configure persistent storage Configure persistent NFS storage on workstation.lab.example.com in the following way: *Applay all latest updates on workstation.lab.example.com Create and share /OSE_mysql Create and share /OSE_wordpress Create and share /OSE_registry All the shares must be available to anyone in the subnet 172.25.250.0/255.255.255.0 Assocate the share named /OSE_registry to the registry running within your OpenShift Enterprice so that it will be used, instead of the default one,for permament storage.Use exam-registry-volume for the volume name and exam-registry-claim for the claim name. ########################################################################## ## on workstation yum -y update mkdir /{OSE_mysql,OSE_wordpress,OSE_registry} chmod 777 /{OSE_mysql,OSE_wordpress,OSE_registry} chown nfsnobody:nfsnobody /{OSE_mysql,OSE_wordpress,OSE_registry} yum install nfs-utils rpcbind cat >> /etc/exports << EOF /OSE_mysql 172.25.250.0/24(rw,all_squash,async) /OSE_wordpress 172.25.250.0/24(rw,all_squash,async) /OSE_registry 172.25.250.0/24(rw,all_squash,async) EOF systemctl restart nfs-server ; systemctl enable nfs-server ## on master oc project default cat > OSE_registry-volume.json << EOF { "apiVersion": "v1", "kind": "PersistentVolume", //资源类型为 PV "metadata": { "name": "exam-registry-volume", //PV 的名称，考题没有要求，但要注意避免与后面的题目重复 "labels": { "deploymentconfig": "docker-registry" //标签 } }, "spec": { "capacity": { "storage": "2Gi" //容量，考题没有硬性要求，参考查看下 storage 主机的分区空间 }, "accessModes": [ "ReadWriteMany" ], //访问权限，所有主机对该 PV 具有读写权限 "nfs": { "path": "/OSE_registry", //NFS 共享目录 "server": "workstation.lab.example.com" //NFS 服务器域 } } } EOF oc create -f OSE_registry-volume.json ; oc get pv cat > OSE_registry-pvclaim.json << EOF { "apiVersion": "v1", "kind": "PersistentVolumeClaim", //资源类型为 PVC "metadata": { "name": "exam-registry-claim", //PVC 名称 "labels": { "deploymentconfig": "docker-registry" //标签 } }, "spec": { "accessModes": [ "ReadWriteMany" ], //访问权限 "resources": { "requests": { "storage": "2Gi" //容量 2G } } } } EOF oc create -f OSE_registry-pvclaim.json ; oc get pvc oc volume dc docker-registry --add --overwrite -t pvc --name=registry-storage --claim-name=exam-registry-claim ########################################################################## *6.old:Create OpenShift Enterprise projects *On your OpenShift Enterprise instance create the following projects: shark tokyo farm *Additionally,Configure the projects as follows: *For all of the projects, set the description to 'This is an EX280 project on OpenShift v3' *Make randy the admin of project shark *The user ryan must be able to view the project shark but not administer or delete it. *Make ryan the admin of projects farm and tokyo. ########################################################################## oc login https://master.lab.example.com:8443 -u randy -p boaterch oc new-project shark --description="This is an EX280 project on OpenShift v3" oadm policy add-role-to-user view ryan -n shark #oadm policy remove-role-from-user <role> <username> oc login https://master.lab.example.com:8443 -u ryan -p boaterch oc new-project farm --description="This is an EX280 project on OpenShift v3" oc new-project tokyo --description="This is an EX280 project on OpenShift v3" ########################################################################## 7.Configure OpenShift quotas for a project Configure quotas and limits for project shark so that: The ResourceQuota resouce is named ex280-quota The amount of memory consumed across all containers may not exceed 1Gi The Total amount of CPU usage consumed across all containers may not exceed 2 Kubernetes compute untis. The maximum number of replication controllers does not exceed 3 The maximum number of services of pods does not exceed 12 The maximum number of services does not exceed 6 The LimitRange resource is named ex280-limits The amount of memory consumed by a single pod is between 5Mi and 300Mi The amount of cpu consumed by a single pod is between 10m and 500m The amount of cpu consumed by a single container is between 10m and 500m with a default request value of 100m ########################################################################## ## on master oc login -u system:admin oc project shark cat >> quota.json << EOF { "apiVersion": "v1", "kind": "ResourceQuota", "metadata": { "name": "ex280-quota" }, "spec": { "hard": { "memory": "1Gi", "cpu": "2", "replicationcontrollers": "3", "pods": "12", "services": "6" } } } EOF oc create -f quota.json -n shark cat >> limits.json << EOF { "kind": "LimitRange", "apiVersion": "v1", "metadata": { "name": "ex280-limits", "creationTimestamp": null }, "spec": { "limits": [ { "type": "Pod", "max": { "cpu": "500m", "memory": "300Mi" }, "min": { "cpu": "10m", "memory": "5Mi" } }, { "type": "Container", "max": { "cpu": "500m" }, "min": { "cpu": "10m" }, "default": { "cpu": "100m" } } ] } } EOF oc create -f limits.json -n shark ########################################################################## 8.Create an application using docker images and definition files(Create an application using pods) Using the example files from the wordpress directory under http://rhgls.lab9.example.com/materials/openshift/origin/examples create a Wordpress application in the farm project. Set the OpenShift security context clearance by running the file in /root/wordprecc_prep.sh on master.lab9.example.com(Note:this is necessary to allow WordPress to bind to port 80) For permanent storage use the the NFS shares /OSE_mysql and /OSE_wordpress from workstation.lab.example.com For the WordPress pod use the Docker image from http://rhgls.lab9.example.com/ex280/wordpress.tar(Note:It is normal if the wordpress pod initially restarts a couple of times due to permission issues) For the MySQL pod use the Docker image openshift3/mysql-55-rhel7 Once deployed the application must be reachable at the following address:http://wordpress.farm.cloudapps.lab.example.com Finally complete the WordPress installation by setting ryan as the admin user with password boaterch and root@master.lab.example.com for the email address. Set the blog name to EX280 Blog Create your first post with title:Carpe dlem.quam minimum credula postero.The text in the post does not matter. ########################################################################## #on master import image: wget http://rhgls.lab9.example.com/ex280/wordpress.tar #we should use online docker to save a image like: docker save wordpress > wordpress.tar docker load < wordpress.tar # docker load -i wordpress.tar docker tag docker.io/wordpress workstation.lab.example.com:5000/openshift3/wordpress docker push workstation.lab.example.com:5000/openshift3/wordpress #/root/wordprecc_prep.sh,is like: #oc patch scc restricted -p '{"runAsUser":{"type":"RunAsAny"}}' oc patch node master.lab.example.com node.lab.example.com -p '{"runAsUser":{"type":"RanAsAny"}}' #on master :template,https://github.com/openshift/origin/blob/master/examples/privileged-pod-pvc/ cat >> mysql-volume.yaml << EOF piVersion: v1 kind: PersistentVolume metadata: name: mysql-volume spec: capacity: storage: 2Gi accessModes: - ReadWriteMany nfs: path: /OSE_mysql server: workstation.lab.example.com persistentVolumeReclaimPolicy: Recycle EOF cat >> mysql-pvclaim.yaml << EOF kind: PersistentVolumeClaim apiVersion: v1 metadata: name: mysql-pvclaim spec: accessModes: - ReadWriteMany resources: requests: storage: 2Gi EOF oc create -f mysql-volume.yaml oc create -f mysql-pvclaim.yaml #create pod mysql and webserver cat >> mysql-pod.yaml << EOF apiVersion: v1 kind: Pod metadata: name: mysql labels: name: mysql spec: containers: - resources: limits : cpu: 0.5 image: openshift/mysql-55-centos7 name: mysql env: - name: MYSQL_ROOT_PASSWORD value: yourpassword - name: MYSQL_USER value: wp_user - name: MYSQL_PASSWORD value: wp_pass - name: MYSQL_DATABASE value: wp_db ports: - containerPort: 3306 name: mysql volumeMounts: - name: mysql-persistent-storage mountPath: /var/lib/mysql/data volumes: - name: mysql-persistent-storage persistentVolumeClaim: claimName: mysql-pvclaim EOF oc create -f mysql-pod.yaml cat >> mysql-service.yaml << EOF apiVersion: v1 kind: Service metadata: labels: name: mysql name: mysql spec: ports: - port: 3306 selector: name: mysql EOF oc create -f mysql-service.yaml cat >> wordpress-volume.yaml << EOF piVersion: v1 kind: PersistentVolume metadata: name: wp-volume spec: capacity: storage: 2Gi accessModes: - ReadWriteMany nfs: path: /OSE_wordpress server: workstation.lab.example.com persistentVolumeReclaimPolicy: Recycle EOF cat >> wordpress-pvclaim.yaml << EOF kind: PersistentVolumeClaim apiVersion: v1 metadata: name: wp-pvclaim spec: accessModes: - ReadWriteMany resources: requests: storage: 2Gi EOF oc create -f wordpress-volume.yaml oc create -f wordpress-pvclaim.yaml cat >> wordpress-pod.yaml << EOF apiVersion: v1 kind: Pod metadata: name: wordpress labels: name: wordpress spec: containers: - image: wordpress name: wordpress env: - name: WORDPRESS_DB_USER value: wp_user - name: WORDPRESS_DB_PASSWORD value: wp_pass - name: WORDPRESS_DB_NAME value: wp_db - name: WORDPRESS_DB_HOST value: mysql ports: - containerPort: 80 name: wordpress volumeMounts: - name: wordpress-persistent-storage mountPath: /var/www/html volumes: - name: wordpress-persistent-storage persistentVolumeClaim: claimName: wp-pvclaim EOF oc create -f wordpress-pod.yaml cat >> wordpress-service.yaml << EOF apiVersion: v1 kind: Service metadata: labels: name: wpfrontend name: wpfrontend spec: ports: - port: 80 targetPort: wordpress selector: name: wordpress type: LoadBalancer EOF oc create -f mysql-service.yaml oc create -f wordpress-service.yaml #set route #ay05.txt:#oc expose pod pod名称 --name service名称 --selector='name=mysqldb' #day05.txt:#oc expose service 路由名称 --port=8080 #day07.txt:#oc expose service instructor --hostname instructor.cloudapps.lab.example.com #oc expose service/<name> --name=routername --hostname=wordpress.cloudapps.lab.example.com oc expose service wpfrontend --name=wordpressroute --hostname=wordpress.farm.cloudapps.lab.example.com --port=80 #then use the web domain visit and set ########################################################################## 9:Create an application from a Git repository Use the S2I functionality of your Openshift instance to build an application in the tokyo project. Use the Git repository at http://workstation.lab.example.com/php-helloworld for the application source Use the Docker image labeled workstation.lab.example.com:5000/openshift3/php-55-rhel7(if you are using the WebGUI just add the available 2.0 Rady Image) Once deployed the application must be reachable(and browse-able)at the following address:http://mordor.tokyo.cloudapp.lab.example.com Update the original repository so that the app.rb file contains the text from http://rhgls.lab9.example.com/materials/morfor.txt instead of the word PLACEHOLDER Trigger a rebuild so that when browsing http://monfor.tokyou.cloudapp.example.com it will display the new text ########################################################################## ## on master , use git: http://workstation.lab.example.com/php-helloworld ; use image : workstation.lab.example.com:5000/openshift3/php-55-rhel7 oc -o json new-app workstation.lab.example.com:5000/openshift3/php-55-rhel7~http://workstation.lab.example.com/php-helloworld --name=gits2i > git-s2i.json oc create -f git-s2i.json #oc expose service php-helloworld --hostname http://mordor.tokyo.cloudapps.lab.example.com oc expose service gits2i --name=gits2iroute --hostname=gits2i.cloudapps.lab.example.com --port=80 git clone http://workstation.lab.example.com/php-helloworld cd php-helloworld vim index.php git add index.php git commit -m "change" git push oc start-build gits2i #or on web Builds=>Builds=>php-helloworld=>Start Build ########################################################################## 10.Create an application from a template On master.lab9.example.com using the template file http://rhgls.lab9.example.com/materials/ex280-template.json as a basis,install an application in the shark project according to the following requirements: The application uses the Git repository at http://git.lab9.example.com/git/ex280-app.git for its source All the registry entries point to your local registry at registry.lab9.example.com:5000 *Import the template so that any Openshift user can use it. Change the SourceStrategy ImageStream tag name from ruby:latest to ruby:2.0 Deploy an application using the template Once deployed the application must be reachable(and browse able) at the following address:http://ex280-app.shark.devcloud.lab9.example.com ########################################################################## #on master #oc export template XXX -o yaml > template.yaml #or download template from :https://github.com/openshift/origin/tree/release-3.7/examples/quickstarts,like:https://raw.githubusercontent.com/openshift/rails-ex/master/openshift/templates/rails-postgresql.json oc project openshift #仅在 openshift 下创建的模版才可以给所有人使用 wget http://rhgls.lab9.example.com/materials/ex280-template.json oc create -f ex280-template.json #All the registry entries point to your local registry at registry.lab9.example.com:5000 #Change the SourceStrategy ImageStream tag name from ruby:latest to ruby:2.0 # login web with the user randy who has the project shark shark=>new project=>ex280-template=> APPLICATION_NAME:ex280-app APPLICATION_HOSTNAME:ex280-app.shark.devcloud.lab9.example.com GIT_URI:http://git.lab9.example.com/git/ex280-app.git =>create #docker tag imageid newid ########################################################################## |